GPT-5.6
GPT-5.6 is an API-only (closed weights) language model from OpenAI, released July 9, 2026. The context window is 1.1M tokens. API price: $4 input / $20 output per million tokens.
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Lab
OpenAI
Released
July 9, 2026
Weights
API-only (closed weights)
Parameters
–
Context
1.1M
Price / M tokens
$4 / $20 in / out
Epoch ECI
not yet rated
Benchmark results
Epoch AI has not published results for GPT-5.6 yet. New models are usually evaluated within days to weeks.
More from OpenAI
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